CA2231785A1 - Dynamically controlled routing of calls in intelligent networks - Google Patents

Dynamically controlled routing of calls in intelligent networks

Info

Publication number
CA2231785A1
CA2231785A1 CA002231785A CA2231785A CA2231785A1 CA 2231785 A1 CA2231785 A1 CA 2231785A1 CA 002231785 A CA002231785 A CA 002231785A CA 2231785 A CA2231785 A CA 2231785A CA 2231785 A1 CA2231785 A1 CA 2231785A1
Authority
CA
Canada
Prior art keywords
switching unit
call
tandem
unit
central computer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002231785A
Other languages
French (fr)
Other versions
CA2231785C (en
Inventor
Yvon Archambault
Jean Choquette
Jean Regnier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nortel Networks Ltd
Original Assignee
Northern Telecom Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Northern Telecom Ltd filed Critical Northern Telecom Ltd
Publication of CA2231785A1 publication Critical patent/CA2231785A1/en
Application granted granted Critical
Publication of CA2231785C publication Critical patent/CA2231785C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges
    • H04Q3/0029—Provisions for intelligent networking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M7/00—Arrangements for interconnection between switching centres
    • H04M7/12—Arrangements for interconnection between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal

Abstract

An "Intelligent" telecommunications network comprises a plurality of switchi ng units interconnected by links, and connected to a central computer unit by a data communication system. For dynamic routing of a call, a first switching unit responds to a destination address in a call to attempt a direct link to a neighbouring switching unit and, in the event that the attempt is unsuccessful, issues to the central computer unit a message containing the destination address. The central computer unit uses t he destination address to identify the unsuccessful link; (ii) updates a routin g database to identify the link as unavailable; (iii) determines an alternative route for the call using a tandem node and (iv) compiles a return message including a network address f or a tandem switching unit and transmits it to the first switching unit. The latt er attempts to route the call via a link to the tandem unit which attempts to complete the call by a direct link to the destination switching unit. The tandem node switching unit also queries the central computer if it cannot complete the call by a direct link to the destination switching unit, whereupon the central computer will set to zero the idleness of the direct link which the tandem unit attempted and then determine an alternate route from the tandem unitto the destination, i.e. with the idleness factors of both direct links set to zero, resulting in an alternate route having three links.
CA002231785A 1997-03-20 1998-03-11 Dynamically controlled routing of calls in intelligent networks Expired - Fee Related CA2231785C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/822,618 1997-03-20
US08/822,618 US5930348A (en) 1997-03-20 1997-03-20 Dynamically controlled routing of calls in intelligent networks

Publications (2)

Publication Number Publication Date
CA2231785A1 true CA2231785A1 (en) 1998-09-20
CA2231785C CA2231785C (en) 2001-09-25

Family

ID=25236521

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002231785A Expired - Fee Related CA2231785C (en) 1997-03-20 1998-03-11 Dynamically controlled routing of calls in intelligent networks

Country Status (2)

Country Link
US (1) US5930348A (en)
CA (1) CA2231785C (en)

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Also Published As

Publication number Publication date
US5930348A (en) 1999-07-27
CA2231785C (en) 2001-09-25

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